<?php
/**
 * crcl/base
 *
 * Copyright 2013 CRCL - André Sabosch - info@crcl.de
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace crcl\base\template\container\xhtml\instructions;

interface ITranslate
{
}

class ContainerTranslate extends Concrete implements ITranslate, IConcrete
{
  const ATTRIBUTE_ATTRIBUTE = 'attribute';
  const ATTRIBUTE_TRANSLATE = 'translate';
  const ATTRIBUTE_GROUP = 'group';

  public function start()
  {
    $oTrigger = new \crcl\base\template\Trigger();

    if ($this->hasAttribute(self::ATTRIBUTE_ATTRIBUTE))
    {
      $oTrigger->setScope(
          \crcl\base\template\container\xhtml\Instruction::SCOPE_NEXT_ATTRIBUTE_REPLACE);
    }
    else
    {
      $oTrigger->setScope(\crcl\base\template\container\xhtml\Instruction::SCOPE_CURRENT);
    }
    $oTrigger->setInstruction($this);
    return $oTrigger;
  }

  public function executeCurrent()
  {
    if (!$this->hasAttribute(self::ATTRIBUTE_ATTRIBUTE))
    {
      $sOutput = $this->compileOutput();
      $this->sContent = $sOutput;
    }
  }

  public function executeNext($sTag, $aAttributes)
  {
    $sAttribute = $this->getAttribute(self::ATTRIBUTE_ATTRIBUTE);
    $sOutput = $this->compileOutput();

    $this->aContentAttributes = array_merge($aAttributes, array($sAttribute => $sOutput));
  }

  /** PRIVATE *************************************************************************************/

  protected $aAllowedAttributes = array('translate', 'group', 'attribute');

  private function compileOutput()
  {
    $sKey = $this->getAttribute(self::ATTRIBUTE_TRANSLATE);
    $sGroup = $this->getAttribute(self::ATTRIBUTE_GROUP);

    $sOutput = self::endHeredoc() .
    '$sContent .= \crcl\base\string\Entities::numeric(\crcl\base\i18n\Translator::translate(\'' . $sKey . '\', \'' . $sGroup . '\'));' .
    self::startHeredoc();

    return $sOutput;
  }
}